Alibaba.com offers 2,219 door key blank products. such as free samples, paid samples. There are 2,319 door key blank suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 95%, 3%, and 1% of door key blank respectively. Door key blank products are most popular in Western Europe, North America, and South America. You can ensure product safety by selecting from certified suppliers, including 612 with ISO9001, 274 with Other, and 43 with ISO14001 certification.